One vertex per element, one color per generator, with an edge from x to x·s.
(2,4)(5,6,10,11)(7,12,9,8)(13,14,18,16)(15,19,17,20)(21,22,26,24)(23,29,30,27)(25,32,33,28)(31,34,36,35)(5,7,10,9)(6,8,11,12)(13,15,18,17)(14,19,16,20)(23,30)(25,33)(27,29)(28,32)(5,8,10,12)(6,7,11,9)(13,16,18,14)(15,19,17,20)(21,23)(22,27)(24,29)(25,31)(26,30)(28,34)(32,35)(33,36)(1,2)(3,4)(5,6)(7,8)(9,12)(10,11)(13,17,18,15)(14,19,16,20)(21,24,26,22)(23,27,30,29)(25,32,33,28)(31,34,36,35)(5,9,10,7)(6,8,11,12)(21,25)(22,28)(23,31)(24,32)(26,33)(27,34)(29,35)(30,36)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.